Opened 7 years ago

Closed 6 years ago

#8356 closed Bug report (fixed)

Can't connect to Windows Server 2012 (IIS 8) FTP when using FTPES

Reported by: gbaotic Owned by:
Priority: normal Component: FileZilla Client
Keywords: iis8, ftpes Cc:
Component version: Operating system type: Windows
Operating system version: Windows 7 64-bit

Description

Using FileZilla, I cannot connect to any of my Windows Server 2012 machines when using FTPES on IIS 8.

FileZilla 3.6.0.2 debug level 4 log:

Trace:	CControlSocket::DoClose(64)
Trace:	CControlSocket::DoClose(64)
Status:	Resolving address of mysite.mydomain.com
Status:	Connecting to 1.1.1.1:21...
Status:	Connection established, waiting for welcome message...
Trace:	CFtpControlSocket::OnReceive()
Response:	220-Microsoft FTP Service
Trace:	CFtpControlSocket::OnReceive()
Response:	220 MyFtpService
Trace:	CFtpControlSocket::SendNextCommand()
Command:	AUTH TLS
Trace:	CFtpControlSocket::OnReceive()
Response:	234 AUTH command ok. Expecting TLS Negotiation.
Status:	Initializing TLS...
Trace:	CTlsSocket::Handshake()
Trace:	CTlsSocket::ContinueHandshake()
Trace:	CTlsSocket::OnSend()
Trace:	CTlsSocket::OnRead()
Trace:	CTlsSocket::ContinueHandshake()
Trace:	CTlsSocket::OnRead()
Trace:	CTlsSocket::ContinueHandshake()
Trace:	CTlsSocket::Failure(-110, 10053)
Error:	GnuTLS error -110: The TLS connection was non-properly terminated.
Trace:	CTlsSocket::OnSocketEvent(): close event received
Trace:	CRealControlSocket::OnClose(10053)
Trace:	CControlSocket::DoClose(64)
Trace:	CFtpControlSocket::ResetOperation(66)
Trace:	CControlSocket::ResetOperation(66)
Error:	Could not connect to server
Trace:	CFileZillaEnginePrivate::ResetOperation(66)

I have already tried reordering cipher suites as desribed here, but it didn't help:
http://blogs.msdn.com/b/kaushal/archive/2011/10/03/taming-the-beast-browser-exploit-against-ssl-tls.aspx

Changing certificates on the FTP site doesn't help as well. I think the error happens before certificate is received.

WS_FTP and some other FTP clients work fine, while WinSCP makes a connection but throws errors on file transfer (something about invalid signature). It did help with file transfers when I prioritized TLS_RSA_WITH_RC4_128_SHA on the server SSL Cipher Suite Order.

It is worth noting that a version of FileZilla from a few weeks ago (I don't know which one exactly) connected fine, but was not able to transfer files (also a lot of errors), exactly what WinSCP does now.

Connecting to my Windows Server 2008 R2 (IIS 7.5) machines works perfectly. FTP sites are configured the same way as they are in the IIS 8 installation.

Change History (1)

comment:1 Changed 6 years ago by Tim Kosse

Resolution: fixed
Status: newclosed

Please try FileZilla 3.7.0.2 which will be released within the next couple of hours.

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